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Finding the Fourth Proportional to 340,576.76, 470,010.50 and 189,673.76

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Solution

The fourth proportional to 340,576.76, 470,010.50 and 189,673.76 is: 261,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,576.76 : 470,010.50 = 189,673.76 : x
  2. Step 2: Convert to fraction form
    340,576.76/470,010.50 = 189,673.76/x
  3. Step 3: Cross multiply
    340,576.76x = 470,010.50 × 189,673.76
  4. Step 4: Simplify right side
    340,576.76x = 89,148,658,774.48
  5. Step 5: Solve for x
    x = 89,148,658,774.48/340,576.76
  6. Step 6: Final answer
    x = 261,757.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.